Estudo da eficiência energética de um ar - condicionado com controle automatizado

Abstract

The use of air conditioning equipment grows exponentially, modifies the characteristics of electricity consumption, and promotes relevant impacts on the world electric system, especially the Brazilian one. In universities there is a significant increase in energy demand, which can lead to a 50% increase in the value of the energy bill, this only in the use of air conditioners. Coordinated energy efficiency actions promote a set of reductions in the production, as well as maintenance and operation costs, avoid unnecessary investments in infrastructure, in addition to direct reduction of energy consumption and improvement in the quality and reliability of processes. Studies in search of more efficient equipment or alternatives is of paramount importance, in order not to overload the system, optimizing the consumption of electricity through automated measuring instruments. The present work evaluates the energy efficiency of an air conditioner, installed in a room the Federal University of Pampa, through measurements of its energy consumption, obtained with a wireless smart switch, and alternating two thermal insulating materials embedded in the air conditioning condenser, to measure the efficiency of this equipment in various situations, under the influence of solar radiation. The methodology consists of: a) characterizing the equipment and site of the study; b) selecting disposal materials to use as thermal mesh in the condenser; c) installing the wireless power switch to remotely monitor the behavior of electricity in the equipment; (d) define the measurement criteria, such as time interval, fan speed and temperature of the appliance; e) measure the energy consumption of air conditioning; f) collect climate data in the measured periods, such as external temperature and solar radiation; (g) to process climate data; h) estimate the energy efficiency of the proposed system and i) evaluate the results collected and compare with that guaranteed by the manufacturer of the appliance. The measurements showed that there is an influence of the coating, especially the thermal mesh made with Tetra Pack, because the consumption decreased by about 103 kWh, compared to the uncoated condition. The development of the work is based on the literature review, highlights ideas that involve the theme addressed and produces conclusions about the results obtained.